You are allowed 7 days to combine addtional items at no additional cost......please request an invoice if the shipping is not combinned. Worldwide shipping is $1.64. Invoices over $40 must be sent Registered. Worldwide Registered shipping is $8.30. Please contact us before leaving feedback if your purchase was anything less than expected….we will do our utmost to insure your satisfaction. *** All items are sold for educational purposes only. This auction complies with all of eBay's stringent rules and regulations. ***